Find one ordered pair $(x,y)$ of real numbers such that $x + y = 10$ and $x^3 + y^3 = 162 + x^2 + y^2.$
You might want to double check the question, because there is no real pair of numbers that holds those properties. There are, however, complex numbers that do:
y=10−x
Therefore, one ordered pair of complex numbers that works is 5 + sqrt(19/14)i and 5 - sqrt(19/14)i
Please let me know if I had made any errors!